Thomas Lockhart wrote:
>>>There have been three ideas of what octet_length() sould return:
>>> 1) compressed on-disk storage length
>>> 2) byte length in server-side encoding
>>> 3) byte length in client-side encoding
>>>
>...
>
>>>The open question is whether we should be doing #3.
>>>
>
>There is no question in my mind that (3) must be the result of
>octet_length(). Any of the other options may give an interesting result,
>but of no practical use to a client trying to retrieve data.
>
What practical use does #3 give ;) do you really envision a program that
does 2
separate queries to retrieve some string, first to query its storage
length and then
to actually read it, instead of just reading it ?
I don't think we evan have a interface in any of our libs where we can
give a
pre-allocated buffer to a client library to fill in. Or do we ?
>And everything is a client!
>
So in a PL/PgSQL function doing some data manipulation through SPI the
"client" is
who - the server or the client or some third party ?
---------------
Hannu